#define  _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <assert.h>
int my_strlen(const char* pa)
{
	int count = 0;
	assert(pa);
	while (*pa != '\0')
	{
		pa++;
		count++;
	}
	return count;
}
int main()
{
	char a[] = "abcdef";
	int len = my_strlen(a);
	printf("%d", len);

	return 0;
}